How To Paint The Inside Of A Fireplace (Easy DIY Guide)

There is no better feeling than getting cozy by a fire with your favorite drink as winter sets in – especially if your fireplace box looks incredible.  

If you plan on lighting fires in your fireplace, you'll need to paint it.Knowing how to paint your fireplace inside in the first step in tying together your home décor while hiding any soot and what a huge difference fireplace box painting makes.

Read on to discover our hacks for painting your fireplace. 

Equipment Required

  • Ventilated area 
  • Face mask 
  • Rubber gloves 
  • Protective gloves 
  • Damp rags 
  • Stiff steel brush 
  • Dishwashing liquid 
  • ½ cup of trisodium phosphate 
  • 1-gallon water 
  • Sandpaper or blocks from 100-220 grit (brick and metal) 
  • Brick-patching compound (optional) 
  • Degreaser (optional) 
  • Fireplace caulk (optional, brick) 


Sweep out the dust, ash, soot, and creosote from the sides and floor before going over everything with a hoover. 

You may need to do this multiple times or employ a TSP and water mixture with the scrub brush to get into all the crannies. Once it is clean, wipe the area with a rag and give the fireplace 24 hours to dry. 


For brick fireplaces, you may want to use a brick-patching compound or fireplace caulk according to their manual instructions to get an even surface.

Once applied, sand the fireplace down with your sanding equipment, starting low and working your way up until you are satisfied. Once done, clean away the dirt and brick dust. 

For metal surface, we recommend going over them with a degreaser first before sanding and cleaning them as above. 

living room fireplace

How To Paint The Inside Of Fireplace (Step-By-Step)

Tool & Supplies Required 

  • Protective clothing 
  • Face mask 
  • Protective gloves 
  • Ventilated workspace 
  • Painter’s tape 
  • Chalk paint or high temperature paint in chosen style and paint color 
  • Drop cloths 
  • Cheap nylon paint brushes 
  • Damp rags or wet rag 
  • Primer (optional) 

DIY Guide Steps

  1. 1
    Ventilate the room you will be working in and put on your protective gear 
  2. 2
    Remove the gate, wood, and other necessary components. 
  3. 3
    Place drop cloth on the floor for protection. Apply painter's tape to any areas that you do not wish to spray paint. 
  4. 4
    If you choose to apply primer, tint the primer until it is a similar color to your topcoat. Once done, apply a thin layer. Let the paint dry for at least four hours. 
  5. 5
    Wash the paint brush with water and let it dry if using liquid paint. 
  6. 6
    Apply 1-2 light coats of paint to the relevant areas. Make sure to leave at least two hours between coats for the paint to dry. Immediately wipe away any stray paint drips with a damp rag. 
  7. 7
    Reassemble your fireplace and enjoy. 

It is vital to remember that thick coats of paint will flake and crack off sooner, meaning that thin layers are vital. You should only need to add multiple layers to a metal surface or bare wall. 

electric fireplace during Christmas

Painting Different Types Of Fireplaces

Brick-Lined Wood Burning Fireplaces 

Need to know how to paint inside of the wood burning fireplace or wood burning stoves with bricks? Brick fireplace and paint mortar are one of the more common styles due to its high heat resistance and easy construction.

Using non-flammable or high heat paint or high heat spray paint that is heat resistant to 1200 degrees can help conceal soot and creosote stains in the long term.  

However, matte black is not the only color available; it is possible to get a wide range of colors. However, most people choose dark colors such as black and grey as they conceal soot and do not require much maintenance. 

In addition, it is possible to get either liquid or spray paint; spray painting brick is easier to handle, but liquid paint gives you more control over the look and finish. 

Metal-Lined Wood Burning Fireplaces 

Are you wondering what paint to use inside metal fireplaces? Newer fireplaces tend to be made of metal which, while stylish, can be harder for the paint to bond with. 

Heat-resistant non-flammable paint that is suitable for metal surfaces is vital to ensure that your spray paint job lasts. Matte rather than gloss would be the best choice in terms of finish and aesthetics. 

Gas Fireplace 

Can you paint inside a gas fireplace or marble fireplace surround? Yes, but it can be a little trickier. Gas fireplaces are typically metal-lined and mean that you do not need to worry about creosote and soot.

However, they will need to be touched up more often than their burn wood counterparts. 

Finding high heat paint that is specifically formulated for gas fireplace or appliances and can bond to metal in high-heat environments is essential.  It can withstand high temperatures up to 1200 degrees farenheit.

brick payed fireplace

Fireplace Painting FAQs

How much does it cost to paint the inside of a fireplace? 

The cost of paint inside of a fireplace depends on how much of the above equipment you have, among other things. It can cost anywhere between $10-$20.

How long does paint last in a fireplace interior? 

Paint in a fireplace interior may last for a few years, but its lifespan can vary depending on factors such as the type of paint, frequency of use, and exposure to heat.

Is it safe to paint a firebox? 

It is safe to paint a firebox with the proper equipment and safety procedures. Make sure to get non-toxic, heat-resistant paint and not firebox paint where the flames touch the walls or flue. 


Can I paint the inside of a fireplace? Yes! Painting mortar or inside of a fireplace can instantly make a statement and tie together your decor while hiding soot stains. 

It is an easy job that can be completed in one weekend without breaking the bank or your back. Get creatine and give it a try for yourself!